... Previous: Why Indexing the Sky is Desirable . ... An alternative algorithm, proposed here, is based on covering the sky with pixels of approximately equal area, and assigning a unique integer to each pixel. ... For each table, the pixel code value corresponding to the central position (RA, Dec) of each source is computed and inserted into a new column called PCODE. ... This cannot be the primary index of a table since PCODE values are not necessarily unique: one pixel may contain more than one...

... CBET now has an M31 novae page , M33 novae page , and an M81 novae page . ... Also, see W. Pietsch's M31 (apparent) optical nova catalogue , M33 novae catalog , and M81 novae catalog Please note that I do not keep track of galactic novae . Nova M81 2016-04a? (= PNV J09560598+6900401 ), ATEL 8904 discovered 2016/04/02.876 by Kamil Hornoch and H. Kucakova . ... Nova M31 2016-03a? (= PNV J00421695+4059098 ), CBAT TOCP discovered 2016/03/01.721 by unknown . ... other extragalactic Novae from 2016 . ...

XMM-Newton Science Analysis System . ... Meta Index / Home Page / Astrometric correction Unfortunately, at the present time no catalogue file is included with an ODF to enable a user to re-compute the astrometry correction. However, CB is happy to create the file for anybody, on request. The catalogue file has to be in FITS file format and contain the following columns in a RAWRES table.: ... XMM-Newton SOC/SSC -- 2008-07-02 ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... des actualit†йs . ... des pages consacr†йes †а la publication de vos photos Mais c'est aussi une vraie communaut†й avec laquelle partager votre passion et nourrir votre curiosit†й. Accueil Le catalogue du projet Galaxy Zoo rendu public . ... Les donn†йes du Galaxy Zoo1, un projet participatif qui invite les internautes †а classer des galaxies selon leur forme, sont d†йsormais accessibles au public. 900 000 galaxies auscult†йes . ...

... This paper ( Burke et al. 2003 ) describes the creation of one such catalogue - the Southern Serendipitous High-redshift Archival ROSAT Cluster (SHARC) survey - which covers an area of 17.7 deg 2 and consists of 32 clusters with redshifts between 0.05 and 0.7 and X-ray luminosities between 7 x 10 42 and 4 x 10 44 erg/s: the high-redshift subsample contains 16 clusters with = 0.3 and X-ray luminosities greater than 2 x 10 43 erg/s (luminosities are quoted for the 0.5 - 2.0 keV energy band). ... 1997 ...

... Get Object Information Returns: <string># Returns a string containing the current target object's name and object type. ... Returns: Nothing. ... LX200GPS AutoStar ­ Performs no function Select deep sky Library where D specifices 0 - Objects CNGC / NGC in Autostar LX200GPS 1 - Objects IC 2 ­ UGC 3 ­ Caldwell (Autostar LX200GPS ) 4 ­ Arp (LX200 GPS) 5 ­ Abell (LX200 GPS) Returns : 1 Catalog available 0 Catalog Not found LX200GPS AutoStar ­ Performs no function always ...

Software Forum Message . ... Astronomy Software Discussion | ... Halley - Electronic Catalogue Of Comets . ... I am informing you that the first release of Halley - Electronic Catalogue of Comets is presented on the website of the Institute of Applied Astronomy RAS. Halley - Electronic Catalogue of Comets is a free application to work with the comets database, containing Keplerian orbital elements, non-gravitational and physical parameters of the comet, and other data. ... www.astronomy.net . ...

... Роман Евгеньевич Ильинский email : ilinsky_r@mail.ru . ... Ильинский Р. Е., Ровенская Т. С. Дифференциалы луча в оптической системе // Вестник МГТУ. ... 1998.- ... Roman Ilinsky , Gradient-index meniscus lens free of spherical aberration, Journal of Optics A: Pure and Applied Optics, volume2, number 5, pages 449-451, year 2000 . ... Ильинский Р. Е. Определение реальных габаритов пучков в градиентных оптических системах // Прикладная оптика -2000: Тез. докл. ... 2000.- ... ROMAN ILINSKY . ...

. Confirmed IDs from the input catalogue as a function of the selection colours. Note that the survey is also remarkably complete with respect to white dwarfs. | Front page | . | << - Completeness | Work currently underway - >> | . Robert J. Smith, ">rsmith@mso.anu.edu.au Last modified: Fri Sep 24 11:39:02 EST 1999 .

Astronotes Armagh Planetarium's Stellar Blog! ... Alien Life . ... Johan Ludvig Emil Dreyer, later changed to John Louis Emil Dreyer, was born on 13 February 1852 in Copenhagen, Denmark.€а There was a tradition of military careers in his family but he chose a different life path becoming an astronomer of international repute. ... The seed of his future career was sown when, at 14 years, he got his hands on a book about Tycho Brahe (1546 тАУ 1601) who seems to have led a very interesting life . ...